
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h2"}, [
            DocChars("O5t"), DocGroup({"client": "b", "tag": "caret"}, []),
            DocChars(" e H d  xFT b ckt"), DocGroup({"tag": "caret", "client": "f"}, [])
        ])
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "pre"}, [
            DocChars("2 k"), DocGroup({"tag": "caret", "client": "d"}, []),
            DocChars(" R3"), DocGroup({"tag": "caret", "client": "a"}, []),
            DocChars("b")
        ]),
        DocGroup({"tag": "p"}, [
            DocGroup({"tag": "caret", "client": "e"}, []),
            DocGroup({"tag": "caret", "client": "c"}, []),
            DocChars("h  e What\'s up with you?")
        ])
    ])
]

a_del: [
    DelWithGroup([
        DelGroup([
            DelSkip(3), DelWithGroup([]),
            DelSkip(17), DelWithGroup([])
        ])
    ]),
    DelGroup([
        DelWithGroup([
            DelSkip(1), DelChars(1), DelSkip(1), DelGroup([]),
            DelSkip(2), DelChars(1), DelWithGroup([]),
            DelSkip(1)
        ]),
        DelWithGroup([
            DelGroup([]),
            DelGroup([]),
            DelSkip(1)
        ])
    ])
]
a_add: [
    AddWithGroup([
        AddGroup({"tag": "h2"}, [
            AddGroup({"tag": "caret", "client": "d"}, []),
            AddSkip(3), AddWithGroup([]),
            AddSkip(17), AddWithGroup([])
        ])
    ]),
    AddWithGroup([
        AddSkip(1), AddChars("f"), AddSkip(3), AddWithGroup([]),
        AddSkip(1), AddGroup({"tag": "caret", "client": "e"}, [])
    ]),
    AddWithGroup([
        AddSkip(1), AddChars("7"), AddGroup({"client": "c", "tag": "caret"}, [])
    ])
]

b_del: [
    DelWithGroup([
        DelWithGroup([
            DelSkip(3), DelWithGroup([]),
            DelSkip(17), DelGroup([])
        ])
    ]),
    DelWithGroup([
        DelWithGroup([])
    ])
]
b_add: [
    AddWithGroup([
        AddWithGroup([
            AddSkip(3), AddWithGroup([]),
            AddSkip(17)
        ])
    ]),
    AddWithGroup([
        AddWithGroup([
            AddChars("Q"), AddGroup({"client": "f", "tag": "caret"}, [])
        ])
    ])
]
